Cymrite-K

AlH₂KO₉Si₃

Fasshauer, D. W.Chatterjee, N. D.Marler, B.

Physics and Chemistry of Minerals (1997) 24, 455-462

a=5.3348Å   b=5.3348Å   c=7.7057Å

α=90°   β=90°   γ=120°